Okay, so you do have some timing problems and we need to fix those. It can be just as much of a problem to go too fast as it is to go too slowly - going too fast often leads to careless mistakes.
On quant, spend 1min minimum and 2.5m maximum on any question, no matter what. If you finish it in 40 seconds, check your work - just to make sure. You have time to spare. If you ever get anything wrong in the sub 1m15s timeframe, it better be because you knew you had no idea how to do it, so you just made a random guess and moved on. And don't go over about 2.5m even if you think you're going to get it right. Consider this scenario:
I spend 4 min on one problem. Afterwards, I check and I did get the right answer! I'm elated that I got the right answer! I think this proves that I should spend 4 min on one problem sometimes! [I'm wrong - the question can be done in 2 min, so the fact that it took me 4 just means that there's still a really good chance I'd make a mistake or that I got a little lucky when I got it right.]
After I spend 4 min on that one problem, I'm now 2 min behind. I know I need to make up that time. The next time I see a problem I know I can do, I try to do is faster to save that time. I save 30 sec. I do that four more times to save the whole 2 min. Yayy! I'm back on track!! [No, I'm not. Chances are I just got at least one of those questions wrong due to a careless mistake because I was rushing. Maybe I even made two careless mistakes. And those questions were ones that I thought were easier, so chances are they're lower level questions. And it hurts my score more to get a lower-level question wrong. See where this is going?]
And guess what? The above two paragraphs illustrate the
best-case scenario. The worst case? I get that 4 min question wrong anyway. I simply run out of time at the end of the test and have to make random guesses. And not just on one question; I've probably had multiple 4 min questions, so I run out of time on a lot of questions at the end. Each time I get one of those wrong, the next one gets easier, and I keep getting them wrong because I don't have time to read them... and then my score gets killed.
So just Don't Do It. :) If you need to spend 3m+ on a problem, that's really an indication that you don't fully know how to do the problem (because there is a 2m solution... but you don't know it).
I think you would also benefit from a timing exercise: learning about how long one minute is without looking at a watch or stopwatch. If you don't have one already, buy yourself a stopwatch with lap timing capability. When you go to do a set of problems, start the stopwatch but turn it over so you can't see the time. Every time you think one minute has gone by, push the lap button. When you're done, see how good you were - and whether you tend to over or underestimate. Get yourself to the point where you're within 15 seconds either way on a regular basis (that is, you can generally predict between 45 sec and 1min 15 sec). Note: at the same time that you are using the stopwatch to time this "1-minute" thing, also use the OG Stopwatch (in your student center) to track the total time spent on each question.
Now, how do you use that when doing problems? If you're not on track by one minute, make an educated guess** and move on. (The general idea is that if you're not on track by the halfway mark, you're unlikely to figure out what's holding you back AND have time to do the whole problem in the 1 min you have left.)
** This also requires you to know HOW to make an educated guess depending upon the type of problem and the content being tested. So that's something else to add to your study: how to make educated guesses on different kinds of problems.
On verbal, your problem is the reverse - you're mostly going way too fast - but you're having a similar outcome: too many careless mistakes on questions you know how to get right. Be more systematic. Are you keeping track of your answer choice eliminations on your scrap paper for every single problem? If not, start doing that. Can you pick up your hand and put your finger on the exact word or set of words that tells you that this choice is wrong? (Or that it's right?) Prove it to yourself - point it out.
That said, is there a way of identifying the really hard questions?
Nope. For two reasons. One, there's just no way for you to tell how the entire pool of test takers would react, on average, to the problem in front of you right now. You're not the entire pool of test takers. Which leads us to reason #2: what matters to you is not how the entire pool of test takers feels but how you feel. If it's easier for you, feel free to take less than the average time
as long as you make sure you get it right. Use legitimate shortcuts, but don't cut corners (eg, not write your work down) and possibly cost yourself a question that you know how to do.
And if a question is too hard for you, what could you possibly do even if someone told you, "Oh, that's a lower level question." Not much. :) It's too hard for you, so you deal with it in the same way every time: try to make an educated guess within the average expected timeframe - or a random guess if necessary - and then move on.
You might be interested in this article:
http://www.beatthegmat.com/mba/2010/03/ ... n-the-gmatOne thing that I find intriguing is that in both vebal and quant sections, towards the 25 - 33 question mark, that is where I get most of my mistakes. It seems like like most of my mistakes are concentrated in that particular region, and it hurt my score most because I have been getting wrong answers consecutively.
Hmm. Yeah, possibly there's a stamina / concentration problem going on there. Or possibly there's a timing thing.
On quant, possibly that's when you notice that you're a bit behind, and so you start to speed up, and then that kicks up your careless mistakes. Check into the data to see if this might be happening.
On verbal, you mentioned elsewhere that you also tend to speed up as the section goes on, so possibly this is where your timing goes down and again careless errors tick up. Here, you want to be extra-careful about being systematic, as described above.
Make sure you're also eating and drinking "energy food" on your breaks - stuff that will last for the full 75 minutes. (energy food = whole grain, protein, and a little fat)
And, of course, review whatever the data's telling you to review. :) For inequalities and NP, these articles might help:
http://www.beatthegmat.com/mba/2010/09/ ... t-problemshttp://www.beatthegmat.com/mba/2010/10/ ... es-problemhttp://www.beatthegmat.com/mba/2010/10/ ... ty-problemAnd one last note:
All the wrong ones from 500-600 level are mainly careless mistakes. My goal is to cut that and get as many 600-700 right as I can
Exactly! If you want a 700 (or high 600s), you can get all of those 700+ questions wrong and still hit your score. But if you get too many sub-700 (or sub-high-600) questions wrong, there goes your score...